In Stock

The product is available in our warehouse. You can place the order and you will receive it according to the shipping method.

On Demand

On Demand products are items that we bring to our customers through an order.

So place a normal order and we will ask for them to our suppliers, and will ship to you in just one shipment to save costs. The period may vary from 1 to 3 weeks. When the order is complete, we will ship it to you!.

Back Order

Currently, there is no stock, but we will receive it soon. You can buy it and we will ship the order as soon as it comes back available (normally from 1 to 3 weeks).

Orders that include an On Demand or Back Order item will be shipped when they are available again in one shipment. This means the order will take from 1 to 3 weeks to be shipped once the order is placed You will be notified when adding a backorder product in the cart. If you want to receive first the items in-stock, please, place two different orders separating the in-stock and On Demand or Back Order items.

Retired

This product is only available for search (tutorials, schematics...). They can not be purchased.

The eTape Liquid Level Sensor is a solid-state sensor with a resistive output that varies with the level of the fluid. It does away with clunky mechanical floats, and easily interfaces with electronic control systems. The eTape sensor's envelope is compressed by the hydrostatic pressure of the fluid in which it is immersed. This results in a change in resistance that corresponds to the distance from the top of the sensor to the surface of the fluid. The sensor's resistive output is inversely proportional to the height of the liquid: the lower the liquid level, the higher the output resistance; the higher the liquid level, the lower the output resistance.

This is a very unique sensor, we haven't seen anything else that is affordable and accurate for measuring liquid level. This sensor seems like it would be a handy addition to an hydroponics, aquarium, fountain or pool controller, or perhaps measuring a rain tube. This particular sensor is the 12" model, we also include a 4-pin connector and 560 ohm resistor. The connector is so you don't have to solder directly to the delicate pins: instead, just solder to the connector and plug it onto the sensor.

Since the sensor is resistive, it is easy to read it using a microcontroller/Arduino ADC pin. Check the tutorials tab for a quick-start pointer.

Connect pin #2 of the sensor to ground, then pin #3 to a 560 ohm resistor. The other side of the 560 ohm resistor to VCC (3.3V or 5V for example) to create a resistor divider. The ADC pin connects to the point between the resistor and sensor.